Heat rash is a skin irritation caused by excessive sweating. It can occur at any age and it appears as a rash that itches or feels prickly, and looks like a red cluster of pimples or small blisters.
Heat rash remedies include OTC creams and sprays. Usually heat rash resolves when the skin is cooled sufficiently. Medical treatment may be necessary if the sweat glands become infected. Read more: Heat Rash: Pictures, Symptoms, and Treatment Article
Multimedia: Slideshows, Images & Quizzes
Heart Disease: Causes of a Heart Attack
Heart disease prevention includes controlling risk factors like diet, exercise, and stress. Heart disease symptoms in women may...
Heart Disease: Symptoms, Signs, and Causes
What is heart disease (coronary artery disease)? Learn about the causes of heart disease. Symptoms of heart disease include chest...
Dehydration: Causes, Symptoms & Signs
Do you know the signs of dehydration? Dehydration can be mild or life-threatening. Learn causes, symptoms, treatments, and...
Common Childhood Skin Disorders
What are the most common skin rashes in children? Learn about childhood eczema, ring worm, chicken pox and more. Get the facts on...
8 First Aid Kit Essentials for Scrapes, Cuts, Bug Bites, and More in Pictures
Are you always prepared for a first aid crisis? See which basic first aid items to pack to treat minor scrapes, cuts, and stings...
Heat Rash: How Do You Get Rid of It?
Do you know what heat rash looks like? Prickly heat is an itchy skin problem. It can cause pus-filled papules (blisters), red...
First Aid Emergencies: When to Call 911
It’s not always easy to tell the difference between a minor bump on the head and a serious head injury. Here are some situations...
First Aid Emergencies: What Heat Can Do to Your Body
Too much heat can make you tired, sick, and woozy. WebMD guides you through these and other things heat can do to your body and...
Bad Gross-outs for Teen Boy's Locker Room in Pictures
Team spirit isn't the only thing that grows in locker rooms. From yellow toenails and itchy rashes to body odor and smelly gear,...
Summer Skin Risks: Sunburn, Bug Bites & Poison Ivy
When it comes to summer, there plenty of hazards under the sun! Take the Summer Skin Hazards Quiz and clue in on the dangers to...
Trauma and First Aid Quiz: Training and Supplies
What should be in your first-aid kit? Take this quiz to understand trauma and learn the truth about how to administer first aid.
Skin Quiz: Acne, Dry Skin, Dandruff & More
What's that all over you? Skin, of course! Test your knowledge of your most amazing organ with the Skin Quiz!
Dry Skin Quiz: Test Your Dry Skin IQ
Dry, itching, flaky skin? Take the Dry Skin Quiz to learn what's causing your dry skin and what you can do about it beyond...
Exercise and Fitness Quiz: Test Your IQ
Take our Exercise and Fitness Quiz and learn to maximize your fitness level with simple exercises that do not require major...
Picture of Miliaria Rubra (Prickly Heat)
This is the most common form of miliaria. See a picture of Miliaria Rubra (Prickly Heat) and learn more about the health topic.
Children’s Health: 11 Causes of Common Skin Rashes
What causes skin rashes in children? See which chemicals in your home could be causing your child's skin rash, irritated skin,...
Picture of Skin
The skin is the largest organ of the body, with a total area of about 20 square feet. See a picture of the Skin and learn more...
Summer Skin Dangers: Burns, Bites, Stings, and More
Summer can be hazardous to your skin if you come in contact with jellyfish, stingrays, henna tattoos, poison ivy, oak, sumac,...
IMAGESBrowse through our medical image collection to see pictures of the most common, and uncommon, skin conditions See Images
Related Disease Conditions
The word "rash" means an outbreak of red bumps on the body. The way people use this term, "a rash" can refer to many different skin conditions. The most common of these are scaly patches of skin and red, itchy bumps or patches all over the place.
Dehydration is the excessive loss of body water. There are a number of causes of dehydration including heat exposure, prolonged vigorous exercise, and some diseases of the gastrointestinal tract. Symptoms of dehydration include headache, lightheadedness, constipation, and bad breath. Treatment for dehydration is to replace lost fluids and electrolytes.
Obesity is the state of being well above one's normal weight. A person has traditionally been considered to be obese if they are more than 20% over their ideal weight. That ideal weight must take into account the person's height, age, sex, and build.
Fever in Adults and Children
Although a fever technically is any body temperature above the normal of 98.6 F (37 C), in practice, a person is usually not considered to have a significant fever until the temperature is above 100.4 F (38 C). Fever is part of the body's own disease-fighting arsenal; rising body temperatures apparently are capable of killing off many disease-producing organisms.
Itch (Itching or Pruritus)
Itching can be a common problem. Itches can be localized or generalized. There are many causes of itching to include: infection (jock itch, vaginal itch), disease (hyperthyroidism, liver or kidney), reactions to drugs, and skin infestations (pubic or body lice). Treatment for itching varies depending on the cause of the itch.
Dizziness is a symptom that often applies to a variety of sensations including lightheadedness and vertigo. Causes of dizziness include low blood pressure, heart problems, anemia, dehydration, and other medical conditions. Treatment of dizziness depends on the cause.
Eczema refers to skin inflammation. There are many different types of eczema that produce symptoms and signs that range from oozing blisters to crusty plaques of skin. Treatment varies depending upon the type of eczema the person has.
Sun-Sensitive Drugs (Photosensitivity to Drugs)
Sun sensitivity (photosensitivity) is an inflammation of the skin induced by the combination of medications or substances and sunlight. The effect on the skin is redness, which looks similar to a sunburn. Generally, these reactions are either phototoxic or photoallergic. Phototoxic drugs are more common than photoallergic drugs. Symptoms of phototoxic reactions are a burning and stinging sensation and then redness. Symptoms of photoallergic reactions are itching, redness, swelling, and blisters of the affected area. Treatment generally is discontinuation of the medication and topical application of creams.Treatment generally is discontinuation of the medication and topical application of creams.
Heat Stroke (A Very Serious Condition)
Heat stroke (heatstroke or sun stroke) is a form of hyperthermia. Heat stroke is a true medical emergency that can be fatal if not promptly and properly treated. Symptoms of heat stroke include high body temperature, absence of sweating, hot red or flushed dry skin, rapid pulse, difficulty breathing, strange behavior, hallucinations, confusion, agitation, disorientation, seizure, and coma. A victim of heat stroke must receive immediate treatment to avoid permanent organ damage.
8 Skin Warning Signs to Worry About in a Rash
Most of the rashes are harmless and may not indicate anything serious. However, if there are these accompanying symptoms along with the skin rash, it may signify something serious.
Sunburn (Sun Poisoning)
Sunburn is caused by overexposure to UV radiation from the sun. UV rays can also damage the eyes. Repeated overexposure to UV rays also increases the risk for scarring, freckles, wrinkles, and dry skin. Symptoms of sunburn include painful, red, tender, and hot skin.The skin may blister, swell, and peel. Sun poisoning (severe sunburn) include nausea, fever, chills, rapid pulse, dizziness and more. Home remedies can help relieve sunburn pain, blisters, and peeling. Severe sunburns may need medical treatment. Sun protection and sunscreen for an person's skin type is recommended to decrease the chance of a severe sunburn and sun poisoning.
Heat Exhaustion (First Aid Tips)
Heat exhaustion is a milder form of heat-related illness that can develop after several days of exposure to high temperatures and inadequate or unbalanced replacement fluids. Warning signs of heat exhaustion include heavy sweating, paleness, muscle cramps, tiredness, weakness, dizziness, headache, nausea or vomiting, and fainting. A person suffering from heat exhaustion should stop the activity are doing, move to a cooler environment, and rehydrate with liquids, for example, water or sports drinks. Complications of heat exhaustion are dehydration, muscle weakness, nausea, and vomiting. Heat exhaustion can progress to heat stroke (a medical emergency) if not treated.
Are Skin Rashes Contagious?
Direct and indirect contact can spread some types of rashes from person to person. Rash treatment depends upon a rash's underlying cause. A rash that sheds large amounts of skin warrants urgent medical attention. Rashes can be either contagious or noncontagious. Noncontagious rashes include seborrheic dermatitis, atopic dermatitis, contact dermatitis, stasis dermatitis, psoriasis, nummular eczema, drug eruptions, hives, heat rash (miliaria), and diaper rash. Rashes usually considered contagious include molluscum contagiosum (viral), impetigo (bacterial), herpes (herpes simplex, types 1 and 2 viruses), rash caused by Neisseria meningitides (N. meningitides) (bacterial), rash and blisters that accompany shingles (herpes zoster virus), ringworm (fungal) infections (tinea), scabies (itch mite), chickenpox (viral), measles and rubella (viral), erythema infectiosum (viral), pityriasis rosea (viral), cellulitis and erysipelas (bacterial), lymphangitis (bacterial, and folliculitis (bacterial).
Hyperthermia (Heat-Related Illness)
Heat-related illness include heat rash, cramps, exhaustion, stroke, and sunburn. Treatment of heat related illnesses depend on the condition, but symptoms may include headache, nausea, vomiting, dizziness, fainting, seizures, and coma. Heat stroke is a medical emergency, and may result in death if not treated promptly. Heat exhaustion may lead to heat stroke if not treated properly.
Children's health is focused on the well-being of children from conception through adolescence. There are many aspects of children's health, including growth and development, illnesses, injuries, behavior, mental illness, family health, and community health.
Heat cramps usually affect people who sweat a lot during strenuous activity or work in a hot, humid environment. Symptoms of heat cramps are muscle pains or spasms, usually in the abdomen, arms or legs that occur in association with strenuous activity. Heat cramps are part of a group of heat-related illnesses. Heat cramps can sometimes lead to heat exhaustion or, in severe instances, heat stroke, which is a true medical emergency.
How Can You Tell if a Rash Is Serious?
A rash can become serious if immediate medical assistance is not provided when a patient has the below symptoms include rash covers most of the body, continuous itching, fever, and difficulty breathing
How Long Does a Heat Rash Last on a Baby?
Heat rash is a common issue that affects many babies. Learn the signs of heat rash, what causes it, how long it lasts, how doctors diagnose it, and what you can do to treat it.
First aid is providing medical assistance to someone a sick or injured person. The type of first aid depends on their condition. Preparedness is key to first aid, like having basic medical emergency kits in your home, car, boat, or RV. Many minor injuries may require first aid, including cuts, puncture wounds, sprains, strains, and nosebleeds. Examples of more critical first aid emergencies include heart attacks, strokes, seizures, and heatstroke.
Are Hives and Rash the Same Thing?
Learn how to tell the difference between a rash and hives and how to treat both.
Sunscreens are crucial for sun protection. Sun damage to the skin from exposure to ultraviolet rays is a risk factor for skin cancer and melanoma. To avoid sunburn, people should limit sun exposure during the peak hours of 10 a.m. to 3 p.m., wear protective clothing, and use a sunscreen. People with sensitive skin should use a sunscreen with an SPF of 30 or more.
How Long Does It Take Heat Rash to Go Away?
Heat rash is a skin irritation that usually occurs in humid climates. Learn what causes it, steps you can take to treat it, and how long it lasts.
How Do I Get Rid of Heat Rash on My Face?
What is heat rash on the face and how do you treat it? Learn what medical treatments can help ease heat rash on your face and speed up your recovery from heat rash.
Hurricanes are based on the Saffir-Simpson Hurricane Scale, which places them in 5 categories. Weather (hurricane) predictions, names, and tracking are provided by The National Hurricane Center (NHC), a division of NOAA. Hurricane season lasts from June to November. Preparing for a hurricane is necessary if you live in an area prone to them. Prepare a hurricane supply and first aid kit ahead of time that includes (this is not a complete list): One gallon of water per person for at least 3-7 days. Food for 3-7 days per person First aid kit Prescription drugs Cash Flashlight with fresh batteries Blankets Pillows Pet care items Additional hurricane preparedness items include: Have a safe place to go if necessary Secure your home Taking care of your pets WWhat to do after a hurricane Dealing with the mental stress of surviving a hurricane
What Are the Main Causes of Skin Rashes in Kids?
Why does my child have a skin rash? Find out what to do if your child has a skin rash and why it might occur.
Local ResourcesFind a local Dermatologist in your town
Treatment & Diagnosis
- Summer Skin Hazards Pictures FAQs
- Skin FAQs
- Dry Skin FAQs
- Exercise and Fitness FAQs
- Trauma and First Aid FAQs
- First Aid Fast Facts
- Summer Heat: 15 Ways to Keep Cool When It’s Hot
- 11 Tips for Surviving A Heat Wave Without Air-Conditioning
- 11 Tips for a Safe Fourth of July
- 6 Tips if You Need Healthcare When Traveling
- 5 Ways to Recognize a Heat-Related Illness
- Survivng A Heat Wave audio podcast
Medications & Supplements
Prevention & Wellness
- Best Ways to Beat the Heat
- Will a Heat 'Health Crisis' Hit Your City?
- Expert Tips to Help You Beat the Heat
- Heat Kills More Americans Than Previously Thought
- Don't Be a 'Hot-Head': Study Suggests Head Overheating Impairs Thinking
- How Might Hot Summer Days Affect COVID Spread?
- Planet Already Seeing Temperatures Beyond Human Tolerability
- Dangerously Hot Days for U.S. Farm Workers Could Double by 2050
- Broiling in a Heat Wave? Wet T-shirt Can Safely Cool You Down
- Extreme Heat of Climate Change Could Triple Heart-Related Deaths
- High Heat, Humidity Could Affect More Than 1.2 Billion People by End of Century
- For Muslim Pilgrimage, Climate Change Poses Health Risks
- In Heat Waves, Fans May Do More Harm Than Good
- Scorching Pavement Sends Some to the ER With Burns
- As Heat Bakes the Nation, Expert Offers Tips to Stay Safe
- Health Tip: Recognizing Heat Exhaustion
- Health Tip: Working in Extreme Heat
- More Back-to-Back Heat Waves Will Come With Climate Change
- Forecast Sees Abnormal Heat Worldwide Through 2022
- Health Tip: Warmer Weather Triggers Rashes
- Climate Change Means More Deadly Heat Waves: Study
- It's Hot Outside: How to Stay Safe When Thermometers Rise
- Health Tip: Treating Heat-Related Illness
- How to Use Sunscreens the Right Way
- Beat the Heat on Your Summer Vacation
- Health Tip: Cooling a Heat Rash
- Health Tip: Stay Cool to Prevent Heat Rash
- Health Tip: Caring for Baby's Heat Rash
- It's Not So Much the Heat, It's the Lack of Power
- Heat-Related Deaths on Rise for High School Football Players
- Extreme Weather Affects Indoor Air Quality
- Health Tip: Help Prevent Heat Rash
- Health Tip: Keep Baby From Heat Rash